Tämnarån

The Tämnarån is a river in the Swedish province of Uppsala County.

The 60 km long river drains the lake Tämnaren and flows in a northerly direction to the small town of Tierp over the Gulf of Bothnia and flows Karlholmsbruk in the Lövstabukten.

Including headwaters of the length of the river system 99 km. The catchment area of ​​1258.1 km ². Along the river there are 6 dams which pose a barrier to migratory fish. The Tämnarån is suitable for exploring.